GB2136603B - Helicopter attitude and airspeed acquisition and retention system - Google Patents
Helicopter attitude and airspeed acquisition and retention systemInfo
- Publication number
- GB2136603B GB2136603B GB08401176A GB8401176A GB2136603B GB 2136603 B GB2136603 B GB 2136603B GB 08401176 A GB08401176 A GB 08401176A GB 8401176 A GB8401176 A GB 8401176A GB 2136603 B GB2136603 B GB 2136603B
- Authority
- GB
- United Kingdom
- Prior art keywords
- airspeed
- acquisition
- autopilot
- retention system
- engaged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000014759 maintenance of location Effects 0.000 title 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/0055—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements
- G05D1/0061—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements for transition from automatic pilot to manual pilot and vice versa
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
- G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/08—Control of attitude, i.e. control of roll, pitch, or yaw
- G05D1/0808—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft
- G05D1/0858—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft specially adapted for vertical take-off of aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Navigation (AREA)
- Traffic Control Systems (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Mechanical Control Devices (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The description is substantially identical to that of Patent Specification GB 2081474A but the claims are directed to a helicopter pitch axis autopilot system with provision for manual override when the cyclic pitch control stick is moved away from its trim position, the system memorising the trim position so that the autopilot can subsequently be re-engaged. When the autopilot is re-engaged an airspeed error limiter ensures a smooth transition.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/176,832 US4382283A (en) | 1980-08-08 | 1980-08-08 | Helicopter attitude and airspeed acquisition and retention system |
GB8121053A GB2081474B (en) | 1980-08-08 | 1981-07-08 | Helicopter attitude and airspeed acquisition and retention system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8401176D0 GB8401176D0 (en) | 1984-02-22 |
GB2136603A GB2136603A (en) | 1984-09-19 |
GB2136603B true GB2136603B (en) | 1985-06-05 |
Family
ID=26280057
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08401179A Expired GB2136576B (en) | 1980-08-08 | 1984-01-17 | Helicopter airspeed measuring system |
GB08401178A Expired GB2136605B (en) | 1980-08-08 | 1984-01-17 | Helicopter attitude and airspeed acquisition and retention system |
GB08401177A Expired GB2136604B (en) | 1980-08-08 | 1984-01-17 | Helicopter attitude and airspeed acquisition and retention system |
GB08401176A Expired GB2136603B (en) | 1980-08-08 | 1984-01-17 | Helicopter attitude and airspeed acquisition and retention system |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08401179A Expired GB2136576B (en) | 1980-08-08 | 1984-01-17 | Helicopter airspeed measuring system |
GB08401178A Expired GB2136605B (en) | 1980-08-08 | 1984-01-17 | Helicopter attitude and airspeed acquisition and retention system |
GB08401177A Expired GB2136604B (en) | 1980-08-08 | 1984-01-17 | Helicopter attitude and airspeed acquisition and retention system |
Country Status (1)
Country | Link |
---|---|
GB (4) | GB2136576B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2610411B1 (en) * | 1987-02-04 | 1989-06-09 | Sfim | METHOD AND DEVICE FOR MEASURING THE SPEED IN RELATION TO THE AIR OF A LOW-SPEED HELICOPTER |
FR2741855B1 (en) * | 1995-12-05 | 1998-01-30 | Eurocopter France | CYCLIC SLEEVE SYSTEM FOR SPEED STABILITY OF A HELICOPTER |
US10877487B2 (en) | 2018-04-25 | 2020-12-29 | The Boeing Company | Pitch and thrust control for compound aircraft |
EP3561631B1 (en) * | 2018-04-25 | 2022-11-23 | The Boeing Company | Pitch and thrust control for compound aircraft |
US11312480B2 (en) | 2018-06-01 | 2022-04-26 | Textron Innovations Inc. | System and method for controlling rotorcraft |
EP3677505B1 (en) * | 2019-01-02 | 2024-03-20 | Textron Innovations Inc. | System and method for controlling rotorcraft |
-
1984
- 1984-01-17 GB GB08401179A patent/GB2136576B/en not_active Expired
- 1984-01-17 GB GB08401178A patent/GB2136605B/en not_active Expired
- 1984-01-17 GB GB08401177A patent/GB2136604B/en not_active Expired
- 1984-01-17 GB GB08401176A patent/GB2136603B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2136604A (en) | 1984-09-19 |
GB8401178D0 (en) | 1984-02-22 |
GB2136576A (en) | 1984-09-19 |
GB2136605B (en) | 1985-05-15 |
GB8401176D0 (en) | 1984-02-22 |
GB2136603A (en) | 1984-09-19 |
GB8401177D0 (en) | 1984-02-22 |
GB2136605A (en) | 1984-09-19 |
GB2136604B (en) | 1985-03-27 |
GB2136576B (en) | 1985-03-27 |
GB8401179D0 (en) | 1984-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980708 |